Electronics > Beginners

Connecting the dots

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easilyconfused:
Most of the time I think I'm wasting my time in the pursuit of understanding electronics. It's probably just too far over my head. And-- I'll probably give it up after a while. But every now and then I run across something that makes me think I just might pull it off. I ran across this little video. I don't understand all of it. But anytime a video or text tutorial limits itself to a very simple thing I tend to understand better. I thought I'd share it with you.

Two things account for my failure to acquire: the abstract nature of the subject (invisible power), and a short attention span. Making the abstract easy to understand is hard. Keeping the object lesson short should be fairly easy. This guy did both.



(I initially posted the wrong site- sorry)

saturation:
Consider making the theoretical real by playing with the concepts with any one of those 300-1 learning kits.  You can go at your own pace, have all the parts needed for the project, don't have to solder or build PCB boards, and get to the heart of the issue, the interaction of the components.  There are many types, the snap kit looks better in that the parts assemble like a schematic:



The traditional design is more compact but looks more abstract when assembled, as the spring joints get connected by a swirl of wires as designs get bigger.



I think you can download the user manuals and decide which type is better, and what you can build with it.

If you think you might give it up after a while, why spend too much money on good equipment that will not get good use?

If you give up on the kit, its not more than dinner and a movie for two.



--- Quote from: easilyconfused on July 31, 2010, 06:42:58 pm ---Most of the time I think I'm wasting my time in the pursuit of understanding electronics. It's probably just too far over my head.

And-- I'll probably give it up after a while. But every now and then I run across something that makes me think I just might pull it off. I ran across this little video. I don't understand all of it. But anytime a video or text tutorial limits itself to a very simple thing I tend to understand better. I thought I'd share it with you.

Two things account for my failure to acquire: the abstract nature of the subject (invisible power), and a short attention span. Making the abstract easy to understand is hard. Keeping the object lesson short should be fairly easy. This guy did both.

http://www.electronics-lab.com/blog/?paged=37

--- End quote ---

Simon:
interesting concept, far beyond my mathematical reach

djsb:
I did the final year project of my HND on a motor speed controller. I used PWM to control the motor and an optical sensor to detect the rotational speed. All of the things he mentioned in the video are real issues when you deal with motor drive electronics. It takes time to understand the concepts behind back emf (electromotive force) but this is covered when studying inductance, faradays laws etc. The theory only makes sense when you get your hands on real parts and use them.
I found the video really good at explaining things. Had at look at some of the others as well and they're equally as good.

David.

P.S If you want some theory look here

http://en.wikipedia.org/wiki/Faraday%27s_law_of_induction

More on motors

http://en.wikipedia.org/wiki/Electrical_motor

Mechatrommer:
may i draw a question? whats the benefit of mosfet compared to normal bjt transistor?

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